Air diffuser for discharge ducts of air distribution systems



FIG. 1 is a front perspective view illustrating my design for an air diffuser for discharge ducts of air distribution systems wherein the openings through which air passes are pointed in an upwardly direction;

FIG. 2 is an enlarged left side elevation view thereof;

FIG. 3 is an enlarged right side elevation view thereof;

FIG. 4 is front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top elevation view thereof;

FIG. 7 is a bottom elevation view thereof;

FIG. 8 is an enlarged left side elevation view illustrating my design for an air diffuser in a reversed position wherein the openings through which air passes are pointed in a downward direction; and,

FIG. 9 is an enlarged right side elevation view illustrating my design for an air diffuser also wherein the openings through which air passes are pointed in a downward direction. 

The ornamental design for an air diffuser for discharge ducts of air distribution systems, as shown and described. 